Power adapter



FIG. 1 is a front, top and right side elevational view of a power adapter figure showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left-side elevational view thereof;

FIG. 5 is a right-side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof. 

CLAIM What is claimed is the ornamental design for a power adapter, as shown and described. 